Mixing-machine.



No. 842,262. PATENTBD JAN. 29, 1907.

\ R. 2.3mm.

MIXING MACHINE... APPLICATION FILED 0CT.24, 1905.

m4. ZW7% To all whom it may concern:

, mixing-machines,- and it is UNrrn srnrins RANSOM z. SNELL,

OF SOUTH BEND, INDIANA.

suxme-mAci-imz.

Be it known that I, RANSOM Z. SNELL, a citizen of the United States, residing at South Bend, in the county of St. Joseph and State of Indiana, have invented new and useful Improvements in Mixing-Machines, of which the following is a specification.

This invention relates to improvements in more particularly designed for mixing concrete and similar substances.

The object of the present invention is to provide a machine of this character in which the mixing-tank is rotated on its vertical and horizontal axis simultaneously to amalgamate the material and to dispense the contents; and the invention consists in the construction, combination, and arrangement of parts, all as will be more fully described hereinafter, illustrated in the accompanying fdrawings and finally pointed out in the appended claims. I

' In the drawin' s, Figure lis a side eleva tion showing in 'otted lines two different positions of the mixing-tank. Fig; 2 is an elevation at right angles to Fig. 1, and Fig. 3 is a detail in sectionof the center bearing of the mixing-tank.

.In carrying out my invention I'employ any suitableframe on which to support the mixer. This frame is shown in Figs. 1 and 2 as comprising the'stand'ards 1, in the feet of which are journaled shafts or axles 2, onwhich may be mounted wheels 3, which are keyed to the shaftand rotate therewith andwhich may be adjusted lon itudinally thereon, so as to adjust the tread for different-width trou he or trencheswhich are formed in the buil ing of cement walks, as shownin Fig. 2., These wheels may also be utilized to transport the mixer from place to place. The frame 1 is braced by rods 4.

The mixing-tank 5 is su ported upon a cross-bar 6, which is pivote at each-end to the standards 1. .At its center this cross-bar is formed with a depending socket 8 and a raised face 9, with which a central downwardly-projecting plate 10 on the bottom of the mixing-tank cooperates to form a he rin for the mixing-tank, there being suitaole baTls 11 mounted in alining ball-races in the I contiguous faces, as shown in' Fi 3. This provides a good substantial hear ng for the tank; but to prevent swervin in its rotation a suitable axle-bearing has con associated with the ball-bearings above described.

Patented Jan. 29,1907.

This axle-bearing consists of a shaft 12, the lower end of which is fitted and keyed into the socket 8 of the supporting cross-bar 6. This shaft extends through I the bearingplates 9 and 10 and into an integral upwardlyprojecting sleeve 13 of the tank,so as to provide a'n axle-bearing for the tank, preventing the latter from swerving or tilting on its ballbearings.

The bottom of the tank projects beyond the sides thereof to provide a marginal flange 14, on which is a circumferential rack 15 and with which a pair of rollers '16 engage, the rollers being fixed in the upright ends of cross-bar 6 and bearing upon of the flange, so as to insure against the tank being tilted or displaced from its central hearing especially when it is rotated on its horizontal axis, as will be ex lained hereinafter. The rack 15 is en aged y a ear-wheel 17, mounted on a sha t 18, which as its bearing in the upper end of the standard 1 at one side of the machine, where" it is provided with a crank-handle 19 or-With any other means for imparting rotation to the shaft 18 and its gear-Wheel 17 and thence by the latters enagement with the rack to the mixing-tank. )ne end of the supporting cross-bar 6 is hung upon the shaft 18 of the tank-rotatingmeans and the other end of said cross-bar is rigidly secured to the inner end of a spindle 20,

the supporting standards 1 at the opposite side of the machine, and thus the supporting cross-bar 6 is sus ended at one end by a loose connection wit the shaft 18 and at its other end by a in Fig. 2. On the outer end of the spindle 20 is ri 'dly secured a worm-whee] 22, with whic a worm-shaf t 23, mounted in hearings in the standards and havin on one end a hand-wheel 24, engages.

worm-shaft .23 is rotated the worm-gear is in turn rotated with the spindle 20 to tilt or retate the tank 5, with its supporting cross-bar 6, whereby the shaft 18 and the spindle 20 act as trunnions for the mixing-tank A suitable scraper is arranged so as to scrape the corners, heing 'sup orted from an arm 26, fixed upon the en of the axle-shaft 12, as

shown in dotted lines in Fig, 2.

In using this machine the mixing and discharging of the concrete is accomplished by tank-that is to say, the mixing-tank has a mounted on suitable spindlesthe upper face which is journaled in the upper end ofthe rigid connection with the spindle 2 0, as at 21 the combined rotary motion of the mixing hus when the become thoroughly amalgamated as thetankis again tilted, and when it finally reaches the position indicated by B in dotted lines in Fig. 1 the contents are discharged in a thoroughl y1nixe d condition.

Special stress is laid upon the manner of ar ranging the bearings for the mixing-tank, and it will be noted that the tank not only has an antilricticn-bearing 11 when standing in a perfectly upright horizontal position, as indicated in full lines in the figure of the drawings, but is also prevented from sliding on said bearing when tilted from the true horizontal position by means of the stationary axlebear1ng 12, and when the tank 1s m- -ver ted the roller-bearings 16 engage the flange 14 and serve to hold the parts intact, rollers 16 also acting to steady the rotation of the tank on its bearing 11 either when tilted or otherwise.

It will be seen that the machine, though simple in. construction and light in weight as compared with other similar machines, is ethcient in carrying out all the purposes for which it is intended.

Having thus described my invention, what I claim, and desire to secure by Letters Patout, is

1. A concrete-mixer embodying standards,

a supporting crossbar connected at each end with the top of the standards, a mixing-tank -rotatably mounted on the cross-bar and having a rack therearound, a shaft journaled in the upper end of'one standard, constituting a trunnion for one end of the supportin cross-bar, and having a gearthereon adapte to engage with the rack on the tank, means for rotating said shaft, a spindle ournaled in the upper end of the other standard and having one end secured to the other end of the cross-bar to constitute the other trunnion for the latter, and means connected with said spindle for rotating the latter to tilt the tank,

whereby the tank may be rotated on both its vertical and horizontal axis.

2. The combination with a pair of stand I ards, of a cross-bar pivotally supported by the standards, a mixing tank rotatably mounted on the cross-bar and having a pro jecting marginal flange provided with a rack 11 on its upper face, ashaft journaled in one of the standards, and pivotally supporting one side of the-oross-bar, and a gear-wheel on the shaft, meshlng' with the rack on the mixing-tank.

3. A concrete-mixer embodying standards, a supporting crossbar pivotally hung from the upper ends of said standards, an axleshaft secured to said cross-bar and projecting upwardly, a mixing-tank having a bearing on said cross-bar and also provided with a sleeve which has a bearing on said axle-shaft, a scraper supported from said axle-shaft, means for rotating the mixing-tank on the axleshaft, and means for rotating the tank on the pivots of the supporting cross-bar, substan tially as specified. In testimony whereof I affix my signature in presence of two subscribing witnesses.

' RANSOM z. SNELL.

- Witnesses: I

, GEORGE OLTsoH,

G. M. COLE. 

